Models for pheromone evaluation in Ant Systems for Mobile Ad-hoc networks

On a mobile ad-hoc network environment, where the resources are scarce, the knowledge about the network's link state is essential to optimize the routing procedures. This paper presents a study about different pheromone evaluation models and how they react to possible changes in traffic rate. Observing how the pheromone value on a link changes, it could be possible to identify certain patterns which can indicate the path status. For this study, the behavior of the Ant System evaluation model was compared with a Temporal Active Pheromone model (a biological approach) and a Progressive Pheromone Reduction model with and without a maximum pheromone limit.

As necessidades e redes de apoio de famílias de pessoas com perturbação do espectro do autismo

RESUMO: O objectivo do presente estudo consistiu em avaliar as necessidades de apoio de 63 pais com filhos (crianças, jovens ou adultos) com Perturbação do Espectro Autista (PEA), no que diz respeito a: (1) necessidades de apoio identificadas pelos pais, (2) redes de suporte destes pais e (3) relação entre necessidades de apoio e características dos pais e filhos. Todos os pais tinham participado no 1º nível do projecto nacional intitulado “Oficinas de Pais/Bolsas de Pais” – o Grupo de Apoio Emocional (GAE). No sentido de verificar se ocorreram mudanças nas suas necessidades de apoio, avaliou-se o antes (momento I) e o depois do GAE (momento II). Utilizou-se a Escala de Funções de Apoio Social (Dunst, Trivette, & Deal, 1988) para avaliar as necessidades de apoio e a Escala de Apoio Social (Dunst, Trivette, & Deal, 1988) para avaliar as redes de apoio social. Os resultados demonstram que os pais de pessoas com PEA apresentam (tanto antes como após a frequência nas oficinas do GAE) sobretudo necessidades de apoio de carácter emocional e profissional, e menos necessidades de carácter prático. Para suprir as necessidades de apoio, antes e após o GAE, estes pais recorreram, numa primeira opção, ao cônjuge, aos profissionais e posteriormente aos amigos. Os vizinhos constituíram a rede de apoio social a quem menos recorreram. Apesar de algumas diferenças observadas entre o momento I e momento II, estas não foram estatisticamente significativas nem para as necessidades de apoio, nem para as redes de apoio social.------------------------- ABSTRACT: The study aimed to evaluate the support needs of 63 parents of children, adolescents and adults with Autistic Spectrum Disorder (ASD), concerning three aspects: (1) support needs that parents identified as major target, (2) social support network of these parents, and (3) the relationship between support needs and parent and children characteristics. All parents had participated in the first level of the national project “Oficinas de Pais/Bolsas de Pais” - the Emotional Support Group (ESG). In order to verify if any changes occurred in the needs of support, evaluation was carried before (moment I) and after (moment II) the ESG. In this context, parents filled the Supports Function Scale (Dunst, Trivette, & Deal, 1988), which evaluated their different needs of support, and also the Social Supports Scale (Dunst, Trivette & Deal, 1988) which in turn evaluated their social support network. The results showed that parents of children with ASD, both before and after the ESG, revealed emotional and professional needs and, in a less extent, also practical needs. To address the referred needs (before and after the ESG) these parents seek in the first place the support of their spouse, then that of professionals and, later on, that of friends. Neighbours are the support that parents least address. Despite some observed differences in support needs and social support networks between the two moments, these were, however, not statistically significant.

Co-Authorship of scientists in the energy field: an exploratory study of the ETDE World Energy Database (ETDEWEB) using Social Network Analysis

Paper presented at the 5th European Conference Economics and Management of Energy in Industry, Vilamoura, Algarve. Apr. 14-17, 2009, 11p. URL: http:// www.cenertec.pt/ecemei/

Social media: The new tool in firms’ marketing strategies

In this work project we discuss the advantages and disadvantages of social media as a marketing tool. Four international cases were analyzed to provide anecdotal evidence of how social and viral marketing have been used by four firms in very different industries. We reviewed empirical evidence on the topic to discuss the main components of viral marketing. We concluded that positive (electronic) word of mouth, short response time and seeding through high network value customers are the main drivers of the success of a viral marketing campaign. We also conducted a study of the Portuguese telecommunications industry, in particular, the mobile segment. We found that the three main players operating in this market have been using social media successfully as a marketing tool in a strategic approach to the 14-25 years old segment.

How to design and develop There App: A mobile app focused on live video streaming, promoting new social interactions

This work project aims to demonstrate how to design and develop an innovative concept of video streaming app. The project combines technology push and market pull theories into developing a product that is more suitable for the customer needs, with the particularity that there is no other way of seeing any place in the world, live and ondemand. An analysis on the bigger influencers in terms of design-thinking and new product development, as Tim Brown or Paul Trott, lead to a better understanding on how There App should evolve, keeping in mind the customer desires and technical features.